Process of and apparatus for making calcium cyanamid from calcium carbid.



F. s. WASHBURN. PROCESS OF AND APPARATUS FOR MAKING CALCIUM CYANAMID FROM CALCIUM CARBID.

APPLIOATION FILED JULY 29,1911.

l,015,720. :Panend Jan. 23, 1912.

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c invention consie Ietitntine roy procese end. also in the novel UNITED STATES PATENT onuiou.

FRANK sjWAsHBURn, or NASHVELLE, T mnussnn- PROCESS @E USED APPARATS FOR MAKING CALCIUM CYANAMID FROM CALCCUM CARBID.

Loiyree.

Speeceton of Letters latent.

.Appluation filed July' 29, 1911. Seriallo, 641,354.

To ell, whom it may concern.'

Be it known theft l, FRANK S. Vihsrznunn, e citizen et the United, States, resirling et Nashville, in the State of Tenneesee, lieve inventecl certain new and useful Improvements in lrooesses of and Apparatus for Making Calcium Cyenarnitl from Calcium Cerbicl; unil l do hereby declare the tolg lowing; to be n full, clear, and exact descrip tion of the invention, such as will enable others skilled in the art to which it rippen talus to ineke and use the saine.

This; invention relates to u. process ont and an apparatus tor treating calcium carbid to torni calcium eyenuinicl, and has for its object. to shorten the process aswell es to iinprove the eppnretue new in nee for this purpose. i 1

With these enel other objects in `View., the

in the novel steps `Condetuilzs et een yuetion :incl combinations ot pertsinore Tully hereinafter rliscloeeil und particularly pointe( out in the rliiins.

Referring to the neeonipenying drawings forming e, pui-t ot thi` :specification in which like humming .lesignute like parts in ull the lewe :mlfigure l rezireeents e rliugrznnniutie sectional View oit n. furneee'inzitle in no eorfflunee with my invention; und, "Z represente e.. section tuinen on the line of Fig. l.

l' indie: zniy suitable furnace well, 2 any suituble hopper or eetl forezilciiun ein`- bid Catlin unil any euitlible ineens for lee l ingr the euleiun'i. ezii'birl in e, finely divided conditioil into the furnace.

rllie turi i5; iriwifleiil et its bottoni with the intu al portione through which pisses si'lpport u'iieh is fnzrrouniled by the rietionel 'feeding geur 6 et u ring;F .like torni, driven by the pinion Y, n'iounterl on the sh"I Trying the geur il rhiren by any suite Y nice ot' power troni the pinion 1G, noiiuitez on the ehett ll, on uunulzir space is provided in the tui-nace between the .euppert 5 und the wells ot 'the iurnuce, es ssliowngnnl the annuler ring` (i is supporerl upon euituble rollen` such es 13, which in turn emrieil by any snitable support suoli us l. A `piek or seiziper mechanism eueh as iii is provided pre erebly below the supports le for e purpose to be disclose@ below; and. imi'neclmtely below the delivery epouts 3' are located suitable resistors connected in any suitable .umnner es that shown, to the electrical leed, wires 18 enel 19.

T he operation of iny invention is as tollo\vs:-C1lciuin carbid :in e suitably tine condition is fed through they delivery spouts 3 by opening any suitable valve mechanism 20, und passes over and between the resistors l? und i'ulls upon the top 21 of the support Nitrogen being lend into the furnace by any suitable ineens such as 22, und the Suid resistors being raised to u. proper tempera,- ture by ineens ot current lead over the Wires 18 und 1.9, the well known calcium cyanuniid reaction takes place, und the lutter compound ie produced on the said top 2l ot the support is the calcium eyunainirl grows on the top 2l, the Suid top 2l .as well as the support 5, is lowered by ineens ot the .screw 26 passing through -the nut .Ju which is operated through power trunsn'iitteil by the shaft 2T turning the gear 28. By ineens above disclosed, the eyunznnicl is formed into e onlie 3G. es illustrated, und when the cake is of sntlieientthickness it. 4is chipped. oli" ol" the support 5 by the pick l5, or by other suitable means. lVhile the cuke is forming, the gear (l continuously revolves the support 5, :is well us said cake, upon its longitudinali exis, und thereby nids in muliingr suirl ruhe more uniform. ,ln order that e tight joint may be maintained 'between the parts fl ot the furnace unil the sind support 5, the unnulzir spruce .lf2 is kept `full of (lust composed largely of calcium euibul, ouleiuui cyonulnid, und other waste materials. ils the callo il() lowered, it nonies in enntuctwith u plurzility of eer-.ipers fil., which keeps it el the proper .eine mul ulso gives rise to the (lustubove inentioneil. rlhe dust can be renioveil from time to time troni u suitable opening 32..

ly the ineens unil method above fliseloeeil, the reuetii'in between nitrogen und the eulriuni eerbiii proceeds rep-idly :unl the time necessary to Ineke the calcium cyenumitl is greatly shortened.

lt is obvious that those skilled in the nrt nmy vury the details of my process. es 'well as the construct-ion und zn'rengrenient ot parte o the apparatus without `departing from the Spirit of my invent-ion, and therefore I do'not Wishv to be limited to such features, except as muy be required by the claims.

Patented Jun. Q3. i912. I

tion of an electrically controlled cause said carbid thereby 'consolidating them into a single mass, substantially as described. v

gen to react While' What I claim is t 1. The process of making calcium cyanamid from calcium carbid, which consists in forming said carbid into thin superposed layers .1n an atniosphereof nitrogen; and subjecting successive layers as fast as they are lformed to a temperature sufficient tc and nitrogen to react 2. The process of making calcium cyanamid from calcium carbid, which consists in feeding said carbid intd an atmosphere of `nitrogen While forming the same into thin 'superposed layers; and subjecting successive layers 'as fast as they are formed to the ,actemperature suiiicient to cause said carbid and nitropermittingsaid layers te be fused describ' d.

3. T e process f of making calcium cyan-' amid from calcium carbid, :feeding said carbidinto an atmosphere ci' nitrogen While forming1 -the same into thin superposed layers; subjecting successive layers as fast as they are formed to the action which consists 'in of an electrically controlled vtenfiperature sufficient to causeisaid carbid and nitrogen to react Whilel permitting saidlayers to be fused into a solid cake; and gradually removing said cake out of tlie reacting zone as fast asv it is formed, substantially as de scribed.

4. The process of making calcium cyan amid from calcium carbid, which` consists in feeding said carbid into an atmosphere of nitrogen W 'ile superposed layers; subjecting successive layerslas fast as they are formed to the action of an electrically controlled temperature sufficient to cause said 'carbid and nitrogen to react While permitting said layers to be fused into a solid cake; lowering said cake 'out of the reacting zone as it is formed While into a solid cake, substantially forming thesameinto thin continuing the feeding acticnfand finally removing; said @like from the inluence of scribed.

5. ln an apparatus for producinglcalcilnn cyanamid from. calcium carbid, cornici-v naticn ci: a suitable su port; means for feeding said carbid intl/11n layers in anat- 'byl forming superposed layers "of carbid; lmeans torlieating said layers as fastas they are formed to a produce calcium cyaniniid on said support;

I .andnieans tos-:loweringsaid support as fast described.

7. ln an apparatus for producing calcium cyananiid from calcium carbid,... the combination ci a as said cyanaiiiid is formed, substantially as layers in an atmosphere of nitrogen to said support, thereby i'orming superposed layers; means for heating said layers tov Aa temperature 'suffitemperature siicientA to suitable support? means forfeeding; said carbid in. thin said feeding action, substantially as de-v cient to produce calcium cyanainid on said y support as fast as saidlayers .are formed; ineens for continuously rotating said support While receiving said layers; and rncans for continuously lowering said support sel While said cyanamid is being formed, sub- I stantialiy as described.

l'n testimony,7 whereof, I afiiX turc, in presence of two Witnesses.

` FRANK S. VASHBURN.

my signalfitnesses.:

A.. "wirr-insertion, Fenix .1%. SULLIVAN. 

